US3359796A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for measuring mass flow using a shielded probe
Assignee: University of Illinois at Urbana-Champaign
•
Filing: 1964-01-23
•
Granted: 1967-12-26
•
Expires: 1984-01-23
Abstract
No abstract record available.
Inventors
- 👤 Robert C Dimick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:45
CPC Classifications
G; G01; G01F; G01F1/00; G01F1/56; G01F1/64
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
APPARATUS FOR MEASURING THE MASS FLOW OF ELECTROSTATICALLY CHARGED SOLID PARTICLES IN A SOLID-GAS SUSPENSION FLOWING IN A DUCT SYSTEM HAVING AN APERTURE THEREIN, SAID APPARATUS COMPRISING: A SPHERICALLY SHAPED CONDUCTIVE PROBE IN SAID FLOW STREAM WITHIN SAID DUCT SYSTEM; AN ELONGATED CONDUCTOR EXTENDING THROUGH SAID APERTURE, SAID ELONGATED CONDUCTOR HAVING ONE END CONNECTED TO SAID SPHERICAL PROBE; AN ELECTROMETER ELECTRICALLY COUPLED TO THE OTHER END OF SAID ELONGATED CONDUCTOR OUTSIDE OF SAID DUCT SYSTEM FOR MEASURING THE CURRENT PRODUCED BY THE IMPACT OF SAID PARTICLES AGAINST SAID PROBE; A CONDUCTIVE CYLINDRICAL SHIELD TUBE SURROUNDING SAID SPHERICAL PROBE IN SAID DUCT SYSTEM, SAID CYLINDRICAL SHIELD HAVING OPEN ENDS ALIGNED WITH THE FLOW STREAM IN SAID DUCT SYSTEM FOR DIRECTING SAID FLOW STREAM TO SAID SPHERICAL PROBE; AND SUPPORT MEANS INSULATABLY SUPPORTING SAID SPHERICAL PROBE AND CYLINDRICAL SHIELD WITHIN SAID DUCT SYSTEM.
Claim 2
Dependent Claim
141 words
APPARATUS FOR MEASURING THE MASS FLOW OF ELECTROSTATICALLY CHARGED SOLID PARTICLES IN A SOLID-GAS SUSPENSION FLOWING IN A DUCT SYSTEM HAVING AN APERTURE THEREIN, SAID APPARATUS COMPRISING: A SPHERICALLY SHAPED CONDUCTIVE PROBE IN SAID FLOW STREAM WITHIN SAID DUCT SYSTEM; AN ELONGATED CONDUCTOR EXTENDING THROUGH SAID APERTURE, SAID ELONGATED CONDUCTOR HAVING ONE END CONNECTED TO SAID SPHERICAL PROBE; AN ELECTROMETER ELECTRICALLY COUPLED TO THE OTHER END OF SAID ELONGATED CONDUCTOR OUTSIDE OF SAID DUCT SYSTEM FOR MEASURING THE CURRENT PRODUCED BY THE IMPACT OF SAID PARTICLES AGAINST SAID PROBE; A CONDUCTIVE CYLINDRICAL SHIELD TUBE SURROUNDING SAID SPHERICAL PROBE IN SAID DUCT SYSTEM, SAID CYLINDRICAL SHIELD HAVING OPEN ENDS ALIGNED WITH THE FLOW STREAM IN SAID DUCT SYSTEM FOR DIRECTING SAID FLOW STREAM TO SAID SPHERICAL PROBE; AND SUPPORT MEANS INSULATABLY SUPPORTING SAID SPHERICAL PROBE AND CYLINDRICAL SHIELD WITHIN SAID DUCT SYSTEM.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-12-25 | 1971-06-26 | 1971-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-25 | 1975-06-26 | 1975-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-25 | 1979-06-26 | 1979-12-26 | $7700.00 | Window Closed / Lapsed |